Noob Question: Cargo capacity

[sigmamason]

I have a quick question: How is the cargo capacity on the X3?

I DJ as a full-time 2nd job and I play a lot of amatuer golf: tourneys, outings etc...

Want a vehicle that is decent of gas, decent on insurance, but most of all can carry a dj setup (speakers, turntables, light rig, cds &/or records, etc...) when needed...

Has the X3 been more than adequate for your needs or did the X5 fit you better?

Thanks in Advance for your help...